@article{BMMS_2001_24_1_a8,
     author = {Pattira Ruangsinsap and Vichian Laohakosol and Pattanee Udomkavanich},
     title = {Arithmetic {Funtions} {Over} {Rings} with
                        {Zero} {Divisors}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2001},
     volume = {24},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2001_24_1_a8/}
}